- Unfasten and remove the top engine cover.
- Remove the bottom one engine compartment cover.
- Inspect and ensure that the following systems are tight, free of abrasions, porosity and ruptures in the pipelines, hoses and connections: fuel supply systems; engine cooling and cabin heating systems; brake system.
Finding Oil Leaks
If the engine has high oil consumption, it is necessary to find the places where the oil is leaking. To do this, check the following places:
- Open the oil filler cap and check the seal for porosity and damage.
- Engine crankcase ventilation system: e.g. hose from cylinder head cover to air intake hose.
- Cylinder head cover seal.
- Cylinder head seal.
- Oil drain plug (sealing ring).
- Oil filter sealing gasket: where the oil filter meets the flange.
- Oil pan seal.
- Front and rear camshaft and crankshaft oil seals.
Since the oil usually spreads over a large area when there is a leak, it can be quite difficult to determine the leak location at first glance. When searching for leak locations, it is advisable to act in the manner described below.
- Wash the engine: cover the generator with polyethylene film beforehand. Spray the engine with a standard cleaning agent and after a while wash everything off the engine with a stream of water.
- Sprinkle the joints and seals on the outside of the engine with chalk or talcum powder.
- Check the oil level and top up if necessary.
- Perform a test drive. Since the oil in a hot engine becomes liquid and therefore leaks out faster, it is recommended to perform a test drive on a section of approximately 30 km on a high-speed highway.
- Finally, inspect the engine using a lamp, find any leaks and troubleshoot.
Checking the cooling system
- The hoses must be pushed onto the connecting pipes all the way.
- Check the reliability of the hose clamps; replace the clamps if necessary.
- Check the expansion tank cap sealing gasket for damage.
Caution: Too low a coolant level may be the result of the expansion tank cap not being tightened correctly.
- Obvious loss of coolant and/or the presence of oil in the coolant, as well as white exhaust gases when the engine is warm, indicate a defective cylinder head gasket.
Attention. It is sometimes very difficult to find the leak location. In this case, it is recommended to check the cooling system under pressure. At the same time, you can also check the excess pressure valve in the expansion tank cap.
- Install the top engine cover.
- Set bottom engine compartment cover.
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